Frequently asked questions.

Your results depend on your ISP, network hardware, device performance, and current network activity. Testing over Wi-Fi introduces additional variables. For the most accurate result, test from a device connected directly via Ethernet and close other applications that may be using bandwidth.

We recommend testing periodically — especially if you notice slowdowns during video calls, streaming, or gaming. Testing at different times of day can reveal congestion patterns specific to your ISP or local network.

ISPs advertise theoretical maximum speeds under ideal conditions. Real-world performance depends on network congestion, the quality of infrastructure in your area, routing between your home and the server, and the type of connection (shared cable vs. dedicated fiber). SpeedStar measures the connection between your browser and a Cloudflare test server at the moment you run the test.

The website shows the result for the current visit only. It does not save results to an account, and there is no sign-in. Refreshing or leaving the page clears the result.

Latency is the HTTP round-trip time from your browser to the test server, in milliseconds. It is not an ICMP ping. Lower is better. Jitter is how much those round-trip times vary. The probe-loss figure is the share of those HTTP probes that failed or timed out. It is not an ICMP packet-loss measurement. Low jitter matters for gaming, voice calls, and video conferencing.

Use the form on the Contact page. Messages go to contact@speedstar.xyz.